Gas burner



C. CONE GAS BURNER April 3,1934.

Filed may 1, 1935 v INVENTOR. CARROLL (0N5 ATTORNEY.

Patented Apr. 3, 1934 GAS BURNER Carroll Cone, Lucas County, Ohio, assignor to Surface Combustion Corporation, Toledo, Ohio, a corporation of New York Application May 1, 1933, SerialNo. 668,733

6 Claims.

' Joe *simple in construction and well adapted for its intended purpose.

The various features of novelty and invention will fully appear from the detailed description taken in connection with the accompanying drawing forming part of this specification and where- Fig. 1 is a longitudinal section through the improved burner, a portion of the wall of the furnace to be fired being also shown;

Fig. 2 is a section 'on line 2-2 of Fig. 1, and

Fig. 3 is'a section on line 3--3 of Fig. 1.

1n the drawing, numeral 10 indicates a portion of a furnace wall which is apertured to receive a refractory body or tunnel 11. At one end of the tunnel is a chambered casing generally indicated at 12. At one side of this casing'is an annular flange 13 whereinto one end of the tunnel 11 projects. The casing 12 is provided with an air chamber 14, the inlet to which is indicated at 15, and a gas chamber 16, the inlet to which is indicated at 17. These two chambers are separated from each other by a common partition wall 18 having a relatively large circular aperture 1 coaxial with that of the flange13.

Secured to the wall 18 and projecting therefrom into the tunnel 11 in radially spaced relation is a refractory tube, generally indicated at 20. For seeming the tube to the wall 18, there is provided on the tube a radial flange 21 which is clamped between said wall and a clamping ring 22 by means of bolts 23 secured in the wall 18. On the outside of the tube are longitudinally ex tending ribs 24 for maintaining the tubeand tunnel in spaced concentric relation. The annular passage 25 thus formed between the inner wall of the tunnel and the outer wall of the tube 20 is in direct communication with the air chamber 14. Concentrically positioned within the tube 20 in radially spaced relation to form an annular passage 38 and projecting therefrom is a refractory tube 26. Internal longitudinally extending ribs 24' onthe tube 20 maintain the tubes 20 and 426 in radially spaced relation. "The tube 26 is secured to an annular wall section 2'1 as by means of bolts 28 secured to said section and a ring 29 bethe chamber 1% is in direct connection with the tween which and said wall section a flange on the tube 26 is clamped. The annular wall. section 2'? is part of a chambered structure 30 which is removably secured to the outer face'of the casing 12 as by means of bolts 31. It will be understood that when the structure 30 is disconnected from the casing 12, the tube 26 will be withdrawn from. the tube 20. The annular passage 38 is in direct communication with the gas chamber 16.

The chamber of the structure 30 is indicated at 32 and this chamber and the air chamber 14 are in direct communication by way of a passage 33 in the form of a relatively wide slot as clearly shown in Fig. 2. From this it will be understood that interior of the tube 26. As already stated the chamber 14 is also in direct communication with the annular passage 25 between the tunnel 11 and the tube 20.

Positioned within the chamber 32 is an air defiector or vane 3 Laflixed to a shaft 35 having a crank arm 36 arranged in abutting relation with an arcuate locking flange 37 on the face of the structure 30. When the vane is in the position indicated by the broken lines in Fig. 2 the air flowing through the passage 33 from the chamber 14 will be deflected toward the right as viewed in Fig. 2 and hence the air will tend to flow as indicated by the arrows in Fig. 2, that is to say, in a clockwise direction with the result that the air will enter the tube 26 with a rotary motion.

When the 'vane 34 is vertically disposed as shown in Fig. 2 it will, of course, have no particular effect on the air flowing through the passage 33 and hence the air will enter and flow through the tube 26 Without rotary motion. The vane may be locked by the crank arm 36 at any degree of angularity within its limits of movement and hence the degree of rotation of the air entering the tube 26 can be readily controlled as will now be readily appreciated.

The air and gas will ordinarily be supplied to their respective chambers 14 and 16 at relatively low and preferably equal pressures. When the vane 34 is in vertical position as indicatedin'full 106 lines in Fig. 2, the air and gas will flow from' the tunnel 11 as a composite stream made up of well defined streams of air and gas. In such composite stream, mixing of the air and gas takes place primarily by interdiifusion with the result- 1053 ant production of a luminous flame of substantial length. On the other hand it is possible, without disturbing the governing apparatus (not shown) which controls the admission of air and gas to the burner, to cause a more rapid mixing of the 10 air and gas by the simple expedient of so adlusting the vane 34 that rotary motion will be imparted to the air flowing into the tube 26. Upon leaving the tunnel the mixture tends to spread out radially and hence there is produced a relatively short spreading iiame as will now be readily understood.

The ribs 24 and 24' materially assist in causing the air and gas to leave their passages 25 and 38 in stream line flow as will be readily appreciated.

What I claim is:-

1. A gas burner comprising in combination, a casing providedwith pressure air and gas supply chambers respectively, a tunnel amociated with the casing and receiving air from the air supply chamber, a pair of radially spaced concentric tubes within and projecting from said tunnel, said air supply chamber being in communication with the inner tube and the gas supply chamber with the outer tube, the outertube being radially spaced from the walls or the tunnel.

2. A gas burner comprising in combination, a casing provided with pressure air and gas supply chambers respectively, a tunnel associated with the casing and receiving air from the air supply chamber, a pair of radially spaced concentric tubes within and projecting from said tunnel, said air supply chamber being in communication with the inner tube and the gas' supply chamber with the outer tube, the outer tube being radially spaced from the walls of the tunnel, and means between the inner tube and its communicating chamber for causing the air from such chamber to enter the tube with a rotary motion.

3. In the combination specified in claim 2,-said means comprising an adiustably mounted vane disposed in-the path of flow oi! the air.

4. In the combination specified in claim 1, said inner tube projecting from the tunnel to a greater extent than the outer tube, and the gas chamber surrounding the projecting end of the inner tube.

5. A gas burner comprising in combination, a casing provided with pressure air and gas supply chambers respectively, a tunnel associated with the casing and receiving air from the air supply chamber, a pair of radially spaced concentric tubes within and projecting from said tunnel, said air supply chamber being in communication with the inner tube and the gas supply chamber with the outer tube, the outer tube being radially spaced from the walls of the tunnel, and circumferentially spaced means dividing the annular spaces formed by said tubes into individual straightaway passages.

6. In a gas burner, the combination of an air chamber divided into two communicating compartments by a wall having a slot, a combustion tunnel in communication with one of said compartments, a tube in communication with the other compartment andprojecting into said tunnel,

a vane in that compartment which is in communicati'on with said tube, means for turnably CARROLL CONE.

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